We'll sing song, a soldier's song,
With cheering rousing chorus,
As round our blazing fires we throng,
The starry heavens o'er us;
Impatient for the coming fight,
And as we wait the morning's light,
Here in the silence of the night,
We'll chant a soldier's song.Chorus:
Soldiers are we
Whose lives are pledged to Ireland;
Some have come
From a land beyond the wave.
Sworn to be free,
No more our ancient sire land
Shall shelter the despot or the slave.
Tonight we man the gap of danger
In Erin's cause, come woe or weal
'Mid cannons' roar and rifles peal,
We'll chant a soldier's song.

2. In valley green, on towering crag,
Our fathers fought before us,
And conquered 'neath the same old flag
That's proudly floating o'er us.
We're children of a fighting race,
That never yet has known disgrace,
And as we march, the foe to face,
We'll chant a soldier's song.Chorus:

3. Sons of the Gael! Men of the Pale!
The long watched day is breaking;
The serried ranks of Inisfail
Shall set the Tyrant quaking.
Our camp fires now are burning low;
See in the east a silv'ry glow,
Out yonder waits the Saxon foe,
So chant a soldier's song.Chorus:

Amhran na bFhiann...."Sinne laochra fail"\"we are heroes of destiny". This is the wording of the original version by the author, Laochra was changed to Fianna...giving Fianna Fail meaning Soldiers of destiny, by the Fianna Fail political party when they came to government early in the birth of the Irish state. - David Menzies.

Also, from an article by Niall Fallon in The Irish Times of 11 February 1995:

The Soldier's Song was written in 1907 by Peadar Kearney, an uncle of Brendan Behan, but was not widely known until it was sung both at the GPO during the Easter Rising of 1916 and later at various camps where republicans were interned. Soon after, it was adopted as the national anthem, replacing God Save Ireland. The first edition of the song was published only in 1916.